Date: 24 Nov 2000 13:18:45 -0500 From: Nat Lanza <magus@cs.cmu.edu> To: Tom Samplonius <tom@sdf.com> Cc: Chuck McCrobie <mccrobi@aplcenMP.apl.jhu.edu>, freebsd-scsi@freebsd.org Subject: Re: RFC 2143 (IP over SCSI) Support in FreeBSD Message-ID: <uocsnoh1bei.fsf@hurlame.pdl.cs.cmu.edu> In-Reply-To: Tom Samplonius's message of "Thu, 23 Nov 2000 21:03:44 -0800 (PST)" References: <Pine.BSF.4.05.10011232059590.6766-100000@misery.sdf.com>
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Tom Samplonius <tom@sdf.com> writes: > Is there planned support for SCSI over IP? I've just seen a storage > server that uses SCSI over IP. The reasoning is that gigabit ethernet is > just as fast as fibrechannel, and much more standard. They have drivers > for Linux and NT, and have announced that a driver will be released for > FreeBSD in early 2001? Apparently the driver simply probes the LAN for > SCSI devices and attaches each discovered storage server as a LUN. For > some reason the name of this product escapes me. Please keep in mind that SCSI-over-IP is currently the topic of an active IETF working group, and the protocol development is not finished. It would probably be best to wait for the standard to actually be finalized before adding support, since having support that doesn't interoperate is not much better than having no support. The current timeline has the standard proposal being submitted next May. If you're interested in following the progress of the standard, the IP Storage working group's charter is here: http://www.ietf.org/html.charters/ips-charter.html Additionally, there is a public mailing list archived here: http://ips.pdl.cs.cmu.edu/mail/maillist.html Subscription information for the list is available on the charter page. Our lab is working on SCSI-over-IP, and our target platforms are FreeBSD and Linux. We would most likely be interested in contributing our code to the FreeBSD community when we're done, but it's far too early to make any promises. Also, discussion at the SCSI panel at BSDCon indicated that the FreeBSD SCSI developers are certainly interested in providing a framework in which SCSI-over-IP can be supported well. Our initial results show that it's possible to build a system with decent performance over 100bT and gigabit links without any modifications to the OS -- the driver builds as a self-contained KLD, and acts much like any other SCSI HBA driver. --nat -- nat lanza --------------------- research programmer, parallel data lab, cmu scs magus@cs.cmu.edu -------------------------------- http://www.cs.cmu.edu/~magus/ there are no whole truths; all truths are half-truths -- alfred north whitehead To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
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